Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tai van son snippets" » "thai van son snippets", "thi van son snippets", "tai san son snippets", "tai van dong snippets", "tai van cong snippets", "tai van sung snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("tai van son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tai van son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tai van son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tai van son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.